1249     SmallVectorImpl<MemoryAccess *> &VersionStack,  in optimizeUsesInBlock()  argument
1261         !VersionStack.empty() &&  in optimizeUsesInBlock()
1263     BasicBlock *BackBlock = VersionStack.back()->getBlock();  in optimizeUsesInBlock()
1266     while (VersionStack.back()->getBlock() == BackBlock)  in optimizeUsesInBlock()
1267       VersionStack.pop_back();  in optimizeUsesInBlock()
1274       VersionStack.push_back(&MA);  in optimizeUsesInBlock()
1309         LocInfo.LowerBoundBlock = VersionStack[0]->getBlock();  in optimizeUsesInBlock()
1320       LocInfo.LastKill = VersionStack.size() - 1;  in optimizeUsesInBlock()
1327     assert(LocInfo.LowerBound < VersionStack.size() &&  in optimizeUsesInBlock()
1329     assert(LocInfo.LastKill < VersionStack.size() &&  in optimizeUsesInBlock()
1332     unsigned long UpperBound = VersionStack.size() - 1;  in optimizeUsesInBlock()
1347       if (isa<MemoryPhi>(VersionStack[UpperBound])) {  in optimizeUsesInBlock()
1352         while (VersionStack[UpperBound] != Result) {  in optimizeUsesInBlock()
1360       MemoryDef *MD = cast<MemoryDef>(VersionStack[UpperBound]);  in optimizeUsesInBlock()
1385       if (MSSA->isLiveOnEntryDef(VersionStack[UpperBound]))  in optimizeUsesInBlock()
1387       MU->setDefiningAccess(VersionStack[UpperBound], true, LocInfo.AR);  in optimizeUsesInBlock()
1392       MU->setDefiningAccess(VersionStack[LocInfo.LastKill], true, LocInfo.AR);  in optimizeUsesInBlock()
1394     LocInfo.LowerBound = VersionStack.size() - 1;  in optimizeUsesInBlock()
1401   SmallVector<MemoryAccess *, 16> VersionStack;  in optimizeUses()  local
1403   VersionStack.push_back(MSSA->getLiveOnEntryDef());  in optimizeUses()
1409     optimizeUsesInBlock(DomNode->getBlock(), StackEpoch, PopEpoch, VersionStack,  in optimizeUses()